Die set and template mounting



March 10, 1942. WALES 2,275,706

DIE SET AND TEMPLATE MOUNTING Filed Oct. 25, 1939 3 Sheets-Sheet l Innull M'IWHIWI 'IWIIIH H 111; 1

Fig. 4 INVENTOR.

aa zzw March 10, 1942. G. F. WALES 2,275,706

DIE SET AND TEMPLATE MOUNTING Filed Oct. 23, 1939 5 Sheeis-Sheet 2LVVENTOR Fig.6 a

March 10, 1942. G. F. WALES DIE SET AND TEMPLATE MOUNTING 3 Sheets-Sheet5 Filed 001:. 23, 1939 w m m m fl fA/we/ Patented Mar. 10, 1942 UNITEDSTATES PATENT OFFICE DIE SET AND TEMPLATE MOUNTING George F. Wales,Kenmore, N. Y. Application October 23, 1939, Serial No. 300,782

24 Claims.

My invention relates to a die set and plate mounting which is moreparticularly intended for use in stamping presses, press brakes andsimilar machines although the same may be employed advantageously inother installations.

In the metal stamping industry, a die set is an assemblage of the twomain shoes or holders which form a part of a finished die assemblage,the shoes or holders being held in alignment with one another by guideposts or liner pins firmly assembled to the one shoe while the other hasbearings which slide on the posts as the holders move toward and awayfrom each other. The upper part of a die set is called the punch holder,the lower part is called the die holder or shoe and the posts which keepthem in alignment are called guide posts. Die sets are now a standardcommodity and are purchased by the user in the above condition afterwhich he makes whatever cutting, forming, embossing, punching or othertype of implements he desires and mounts them permanently in the dieset, usually mounting an implement called the punch to the punch holderand an implement called the die to the die holder, said die beingmounted so as to cooperate with the punch.

This assemblage which in its completion is usualy also called a die andwhich is herein referred to as a die assemblage, is then ready to be setinto the stamping press, press brake or Whatever similar machine is todo the work. These machines all have the characteristics of having astationary bed and a movable ram whichis caused to move toward and awayfrom the bed. To the bed of the press, the die holder of ourconventional die set is attached and to the ram the punch holder isfirmly attached so that the movement of the ram causes the punch holderto slide up and down while guided by the guide posts or liner pins inthe die holder and the work is performed at the bottom of the stroke ofthe press when the punch and die implements cooperate.

It has up to the present time been the practise to mount the punch anddie implements in the die set as explained above, there being anindividual complete assemblage which performed only the work it was madefor. Thus, for every operation to be performed, new die sets have beenused and diflerent implements mounted permanently in them. These arecaled single purpose dies.

It has, heretofore, been the custom to build single purpose dies forpractically every operation which had to be performed on a stamping. The

die assemblages are expensive to design and make, expensive to handle inand out of the press, and cumbersome and expensive to store when not inuse. Investments of considerable sums are tied up in die assemblages ofthis con structlon.

Certain die sets have been made, however, where independent individualdies and punches have been capable of being arranged and rearranged toperform operations on various sheets of material. These assemblages havethe disadvantage of being cumbersome to set up and so much'time isconsumed locating each unit in its proper relation to other units thatits general usefulness is ruined. The chief objection to this type ofdie assemblage is that after one operation has been performed on all ofthe pieces comprising the run, the press must remain idle until theindividual punch and die units have been re-arranged and made ready forthe next operation. The expense entailed by making the press remain idleduring the operation of setting these individual units is almostprohibitive.

There is obviously a need therefore for an apparatus which is economicalto make, which can be set up in a press without causing prohibitivedelays and one which is eflicient in its purpose and novel in itsconstruction.

In accordance with this invention, I employ a die set of conventionaldesign for a press, comprising a lower die holder mounted on the bed ofthe press and an upper punch holder mounted on the under side of thereciprocating ram, said upper and lower parts being caused to movetoward and away from each other in perfect alignment either by theconstruction of the press or by guide posts pressed into the lower partand projecting upward through bushings in the upper part but I add tosuch die set the features'enumerated in this application.

One object is to provide a die set which can be installed in a press andallowed to remain there and to provide means for installing in the dieset while it is in position in the press, plates or templates whichcarry the punch and die parts or implements which are to perform thework.

Another object is to so organize the making templates of improved andsimplified form which may be drilled, reamed, or otherwise prepared.together, making it unnecessary except in unusual cases to prepare themseparately.

An additional object is to provide plates having locating points such asone or more edges either alone or in combination with one or more dowelpins so that when the upper plate is attached to the under side of thepunch holder which is already in the press all holes or implementsattached to said plate will line up perfectly with all correspondingholes or implements attached to the lower plate when it is attached tothe die shoe of the die set which is already in the press.

A further object is to provide means in the punch holder so that theupper plate can be slid into accommodating ledges so that the plate willbe held loosely to the punch holder before being tightened in place.

Another object is to provide means for adjusting the templates afterthey have been placed in the die set and before tightening.

Another object is to provide in the die set shoe a novel system ofadjustable gauges and stops for the work.

Another object is to provide means for locating in the templates, whenfirst starting to lay out a pattern of holes, locating holes which willengage with pilot pins in the punch holder and shoe of the die set thusassuring that the upper template and lower template will be in perfectalignment.

Another object is to provide a die set having changeable templates onwhich the same implements are interchangeably mounted so that instead ofhaving a large investment of single purpose dies the manufacturer canreduce his investment considerably by merely storing the templates andhaving a minimum number of die sets. 7

Another object is to provide a simple means for making certain that thepunch and die implements are in perfect alignment with one another. I 1[rel] These objects and the several novel features of the invention arehereinafter more fully described and claimed and the preferred :form ofconstruction by which these objects are attained is shown in theaccompanying drawings, in which-- Figure 1 is a fragmentary perspectiveview of a die set shown resting on the bolster plate of a stamping pressand ready to be attached to the ram of the press which is not shown.

Figure 2 is a perspective view of the two plates to be made intotemplates on which die implements are to be mounted.

Figure 3 is a perspective view of the two templates bolted together sothat the drilling and reaming operations will be identical in bothtemplates.

Figure 4 is a perspective view of the two templates which have beendrilled and reamed for the locating pins of the punch and die members.

Figure 5 is a fragmentary perspective View of the die set shown inFigure l but with the punch template in position in the punch holder andthe die template in position in the die shoe holder.

Figure 6 is a fragmentary perspective view of the punch template with apunching device 10- cated by means of its pilot engaging one of theholes of a template formed in Figure 3 and the die template with thecompanion die located by means of its pilot engaging the hole whichresulted in the die'template when the hole was drilled and reamed in thepunch template. I also show a fragmentary work piece resting on the Idie and a gauge or stop for locating the piece in its proper relation tothe dies.

Figure 7 is a fragmentary view of the punch implement or unit resting onits companion die unit and showing a ring around the die and strippingmember which checks alignment of the punch and die hole and is removedwhen the die tion of the die template after it is placed in the dieshoe.

Figure 10 is a fragmentary cross section of the punch holder showingmeans for locating a template to thepunch holder and means for boltingthe template tightly to the punch holder.

Figure 11 is a perspective view of the die shoe shown in Figures 1 and 5showing adjustable gauging stops against which the work piece is locatedso that the operations will be performed in proper relation toj'theedges of the work. A fragment of one of these gauging stops is shown inFigure 6.

Figure 12 is a fragmentary perspective view of an angle gauge mounted ona die template.

Although this invention is capable of use in various installations thesame is shown in the present case in the drawings as used in connectionwith stamping presses of the kind commonly used for blanking, piercing,trimming, punching, notching and forming sheet metal.

It is obvious that the type of punching die assemblage shown in thedrawings is for illustration of one use of my invention and I intendthat all other forms of devices employed in presses for operation uponsheet metal and other sheet materials be included.

In the following description similar characters of reference indicatelike parts in the several figures of the drawings.

In Figure 1 numeral l0 represents the lower portion of a stamping pressshowing the columns which support the upper part of the press includingthe reciprocating ram to which punch holder 13 of a die set is attachedso that the same becomes substantially a part of the press. Tightlyfastened to the lower portion! of the press is a bolster plate ll towhich the die shoe l2 of the die set is tightly fastened by anyconventional means such as shown by bolts l4, so that the die shoe alsobecomes substantially a fixed part of the press. The numeral l5represents the liner guide posts or pins which are fastened to the dieshoe l2 and guide th, punch holder l3 in perfect alignment to the die soe.

In Figure 2 the plates which are to be made into a punch template l6 anda die template H are prepared by making them both the same size andseeing that the edges i8 and I9 are square with the front edges 20 and2|. The plates are then placed together and squared so that the edgesare in the same plane, in which state they are clamped or boltedtogether as at 24, Figure 3, so as not to shift on one another. Afterthe locations are determined for pilot holes, the holes are drilled andreamed through both plates making them identical so that when they areseparated they appear as shown in Figure 4. In the first instance inFigure 3 with the plates bolted together we shall consider that onlyholes 2-2 have been formed in the two plates and in Figure 4 these holesare designated by the nupunch plate and m, in the die punch implementsto the under side 2| of the punch template I8 and the corresponding dieimplements to the upper side 22| of the die template II. In mounting thepunch implement to the punch template I! Figure 6, the template isplaced upside down and a pilot 23 on the punch implement and coaxialwith the punch is inserted in pilot hole 22a. The flanged outer housing23aof the punch implement is then fastened to the punch template, asshown in Figure 6 by some means such as bolts 25.

Likewise, the die implement of the apparatus is located by means ofpilot 21 coaxial with the die. which is inserted in the hole 2222 whichis the companion of hole 22a. The flanged outer housing 26 of the dieimplement is fastened to the die template by some means such as bolts23.

If many similar devices are to be used repeatedly, a drill jig may beused to prepare the attaching holes 26' in the templates, the jig beingalso located by means of a pilot engaging the pilot hole and havingdrill guiding holes properly spaced.

In the same manner gauging stops 2! shown in Figure 12 may be applied todie template I! for the purpose of locating the work 30.

The templates as shown in the drawings are made of sumcient thickness toproperly support the punch and die implements and to hold the fasteningbolts or screws" and 28, but should be light enough so that they can beeasily handled and stored. The use of relatively thin plates is madepossible by the fact that the locating or pilot holes in the templatesare only for the purpose of correctly locating the pilot pins of thepunch and die implements. The supporting of the implements with theiraxes perpendicular to the templates is effected by securing the flatfaces of the flanged portions of these implements to the adjacent facesof the templates, for example,

by the bolts 25 and 23. This construction also makes it possible toeasily remove the punch and die implements from one pair of templates,so that they can be secured to and used on another pair of templates.

The two templates are now ready to be placed in the press which meansthat the punch implements have been properly assembled to the punchtemplate l6 and the die implements including any gauging stops 29 orother details have been properly assembled to the die template.

The die template assemblage is now placed in its ways 32 of the die shoei2 and slid back into the shoe until it engages a fixed stop. Thetemplate is then adjusted to its desired position by means of screws 34which engage gibs 35 at both ends of the plate after which the templateis fastened firmly in place by means of bolts 36 extending through theplate and into tapped holes in the shoe.

The punch template assemblage is then placed in its ways or rails 3| ofthe punch holder I3 and slid back until it engages a stop directly abovethe one which located the die template in 3 the die shoe. This templateis then adjusted by means of screws 34 until it is in its properrelation to the die template after which it is fastened tightly to thepunch holder. To make sure that all of the implements are locatedproperly a locator such as sleeve ring 33,. Figure 'l is placed around acylindrical die member "I and the ram of the press lowered until astripping member 33 enters the opening in ring 33. Since the die member43 and stripping member 39 are of the same diameter and fit snuglywithin the ring 33, then if the stripping member 33 enters the ring 38,the punch and die implements are in proper alignment. If it does notenter then adjustments are made by means of screws 34 causing thetemplate I 6 to shift until two such locators engage properly afterwhich the template is bolted tightly in place on the punch holder andthe assemblage is ready to go into operation. If a template has morethan three punches or dies, then preferably three pairs of punches anddies are supplied with rings 38, and if three punches enter three rings,then the templates are accurately spaced relatively to each other.

Following is a description of an alternative method of locating thetemplates in the die set accurately.

In this method the ledges 3| and 32 may be done away with and the upperface of the die shoe and the lower face of the punch holder made flat asis shown in Figure 8. r

Instead of having means for adjusting the templates such as is shown inFigure 9, I locate the template in the die set by means of dowel pinslid and lib which are accurately spaced and in direct relation to oneanother and which engage the holes 23a and 230, Figure 4 which are boredas shown at 23 in Figure 3. Of course, the pins may be removable, or bepart of the templates in which case a hardened bushing 42, Figure 10would be provided to avoid wear.

In using this method of locating the templates in the die set it isessential that the holes 23 are very accurately located. Therefore. adrill jig with hole locating bushings is provided which is used fordrilling, reaming, or boring these holes in the templates. The samedrill jig is also used to form the holes in the punch holder and dieshoe of the die set, these parts being closed toether and drilledtogether in much the same manner as the templates.

After the templates are prepared in this manner, the implements areassembled in place and the punch template is placed in the punch holder.A number of means may be provided to facilitate placing the punchtemplate in position but I show in Figure 8 two extending tracks 46 onwhich the template may be placed and slid back to its approximateposition after which the locating dowels may be inserted and thetemplate bolted tightly in place as by bolts 36.

After the die template assemblage is placed in the die shoe and locatedproperly, by means of dowels, the setting is checked by some means suchas ring 38 Figure 7 and the apparatus is ready for production.

As all shapes of flat and flanged pieces within the capacity of theapparatus may be operated upon it is necessary to provide a means for10- eating the pieces in proper relation to the edges of the piece. Forthis purpose I provide slots 43 in the die shoe l2 to which I attachgauge bars 44 and 45 by means of bolts which may be adjusted and clampedany place within the slot.

, the tyfp If desired,bar 44 may be drilled and tapped at intervalsalong its length to accommodate bolts for holding adjustable stops 49 inplace.

In the above specification I have described one form of my invention,but it will be understood that the same is capable of furthermodification without departing from the spirit and scope of theinvention as defined by the following claims.

For instance, the punch template assemblage may be bolted in place tothe punch holder 41, Figure 8, without using either of the foregoingmethods for locating in which case the die template assemblage is placedon the die shoe l8 and the die implements aligned with the punchimplements by some means such as two or more rings 38 after which thedie template is bolted tightly to the die shoe with rings 38 in place.The rings are then removed and the apparatus is ready to run.

Or, the punch template assemblage and die template assemblage may beplaced together with locator rings 38 in place and placed in the pressin this condition in which case the die template is first clampedtightly to the shoe. The ram of the press is then set to its proper shutheight and lowered to engage the punch template which is then boltedtightly to it.

By means of the construction described, any number of punches and diesmay be easily secured to the templates, to produce the work desired. Allof the punches and dies are removably secured to the templates, andafter thedesired number of parts have been made, the templatesare;-removed from the punch holder and die shoe. The punches and diescan then be removed from the templates and used on other templates orfor other work. The templates can then 'be easily stored,. since, theyoccupy comparativelyi little spaceand since the templates are alsoeasily andflir expensively made, avery materialssaving'in' ith'e cost ofa die assemblage is made. When more pieces of the same kind are again;-required, punches and dies can again and accurately secured on thetempla es. chesfand diesmay, for example, be of {shown in my Patent No.2,168,377, or they" maybe of other construction. For any piece*of-work'requiring a number of accurately positioned holes, it is,consequently, only necessary to make a pair of templates, which arepreferably identical, and to removably mount standard punches and diesthereon, thus saving the cost of an expensive die set, such asheretofore employed for producing such work.

I claim as my invention:

1. A die assemblage for use on a press having a stationary member and amember movable toward and from said stationary member, said dieassemblage including a plurality of cooperating punch and die parts, atemplate having locating means thereon for accurately positionon saidtemplate and a cooperating partto position said parts into correctoperative relation to each other and to the other member of the press,and means for securing said cooperating part to said other member of apress while being,

positioned by said locating device.

2. A die assemblage for use on a press having a stationary member and amember movable toward and from said stationary member, said dieassemblage including a plurality of cooperating punch and die parts, atemplate having locating means thereon for accurately positioning someof said parts in correct spaced relation to each other, means forsecuring said parts in their correct relation whilepositioned by saidlocating means, means for securing said template on one member of apress, a cylindrical alining device adapted to engage a part secured onsaid template with a cooperating part to aline said parts, and means forsecuring said cooperating part to a member of a press while held by saidalining device in alinement with a part which is secured to saidtemplate.

3. A die assemblage for use on a press havin a stationary bed and areciprocating ram, said assemblage including a pair of similar aperturedtemplates, each having the apertures therein located in the samerelation to each other and to the template, one of said templates havinga plurality of punches removably mounted thereon and the other templatehaving a plurality of dies removably mounted thereon to cooperate withthe punches of said first template, pilot pins coaxially positioned onsaid punches and dies and adapted to enter into said apertures of saidtemplates for correctly positioning said punches and dies on saidtemplates, and means operable from those faces of said template on whichsaid punches and dies are mounted for securing said punches anddies tosaid templates after they are properly positioned thereon by said pilotpins.

4. A die assemblage comprising a die set including a punch holder and adie shoe mounted to move toward and from each other in correctalinement, said die assemblage including a pair of similar templates,each having similar apertures therein located in the same relation toeach other and to the template, punches removably mounted on one of saidtemplates, dies removably mounted on the other template for cooperationwith said punches, said punches and dies having apertures in theportions thereof arranged adjacent to said templates, said aperturesbeing coaxial with said punches and dies, pilot pins cooperating withsaid apertures in said templates and in said punches and dies forcorrectly positioning said punches and dies on said templates, and meansindependent of said pilot pins and arranged eccentrically of said pilotpins for releasably securing said templates to said punch holder and dieshoe in correct operative relatio to each other. a

5. A die assemblage including a die set having a punch holder and a dieshoe mounted to move toward and from each other in correct alinement,said die assemblage including a pair of similar templates havingsimilarly located apertures therein, punch implements each having oneend formed to penetrate the work and an aperture in the other endcoaxial therewith, dies each having one end thereof apertured forcooperation with a punch and having an aperture in the other end thereofcoaxial with the aperture in said first end thereof, pilot pinscooperating with apertures in said templates and in said punches anddies for correctly positioning said punches and dies on said templates,means independent of and eccentrically arranged with reference to saidpilot pins for releasably securing said' punches and dies to saidtemplates while the same are positioned on said templates by said pilotpins, and means for releasably securing said templates to said punchholder and die shoe in correct operative relation to each other.

6. A die assemblage for use in a press having a stationary bed and areciprocatory ram, said assemblage comprising a die set including apunch holder shoe and a die shoe, which are formed for rigid mounting onsaid ram and bed and which are provided with, means for guiding saidshoes for accurate movement toward and from each other, a pair oftemplates, punches mounted on one of said templates and dies mounted onthe other template for correct cooperation with said punches, means fortemporarily and adjustably supporting a template on one of said shoes,means on said shoe for engaging an edge of the template to adjust thetemplate in a direction transversely of the axes of the punches and dieswhile said template rests on its supporting means, for accuratelyalining said punches and dies, and releasable means for rigidly securingsaid templates to said shoes when in their correctly adjusted positions.

'7. A die assemblage according to claim 6 characterized in that theadjusting means comprises screws extending through tapped holes in oneof said shoes and engaging edge portions of the template supported onsaid shoe for adjusting the same laterally of the axes of the punchesand dies to aline said punches and dies.

8. A die assemblage for use in a press having a stationary bed and areciprocatory ram, said die assemblage including a die set having alower shoe rigidly mounted on said bed, an upper shoe rigidly mounted onsaid ram, means for guiding said shoes to move toward and from eachother, a pair of templates, punches mounted on one of said templates anddies mounted on the other template for cooperation with said punches,means on said shoes for correctly positioning said templates thereon, sothat the punches on one template are in coaxial alinement with the dieson the other template, means for rigidly and releasably securing saidtemplates to said shoes with said punches and dies in coaxial alinement,and gaging means mounted on the template secured on said lower shoe andincluding a stop positioned to be engaged by the work for correct- 1ylocating the same with reference to said punches and dies, andadjustable means for securing said gaging means in correct relation tosaid template mounted on said lower shoe.

9. A die assemblage for use in a press having a stationary bed and areciprocatory ram, said die assemblage including a die set having alower shoe rigidly mounted on said bed, an upper shoe rigidly mounted onsaid ram, means for guiding said shoes to move toward and from eachother, a pair of templates, punches mounted on one of said templates anddies mounted on the other template for cooperation with said punches,means on said shoes for correctly positioning said templates thereon, sothat the punches on one template are in coaxial alinement with the dieson the other template, means for rigidly and releasably securing saidtemplates to said shoes with said punches and dies in coaxial alinement,and gaging means on said lower shoe including stops positioned to beengaged by the work for correctly locating the same with reference tosaid punches and dies, said lower shoe having T-slots formed therein,and bolts cooperating with said T-slots and adjustable therein to holdsaid stops on said lower shoe in position to be engaged by the work forcorrectly positioning the work with reference to said punches and dies.

10. A die assemblage for use on a press having a stationary member and amember movable toward and from said stationary member, said dieassemblage comprising a die set including a plurality of cooperatingpunch and die implements, a pair of templates having identicallypositioned locating means thereon and on which said punch implements andsaid die implements are mounted in correct spaced relation to eachother, means for securing one of said templates on a member of thepress, a plurality of locating devices adapted to be appliedsimultaneously to a plurality of cooperating punch and die implements ofboth said templates for positioning said punch and die parts in correctaxial alinement with each other and thereby positioning said templatesin correct relation to each other, and means for rigidly securing theother template to its press member when the same has been correctlypositioned by said locating devices.

11. A die assemblage for use in a press having a stationary bed, andreciprocating ram, comprising a die set having a lower shoe adapted tobe rigidly mounted to said bed, an upper shoe adapted to be rigidlymounted to said ram, and means for causing the two shoes to operate inalignment, a pair of templates detachably mounted, one under said uppershoe, the other upon said lower shoe, a plurality of punch and dieimplements each including a part adapted to act on the work and alaterally extending portion having a surface extending perpendicular tothe axis of said part, and means engaging said laterally extendingportions for securing said implements to said templates, said punch anddie implements having their perpendicular surfaces secured to theadjacent faces of said upper and lower templates to position said punchimplements in axial alignment with said die implements.

12. A die assemblage for use in a press having a-stationary bed andreciprocating ram, comprising a die set having a lower shoe adapted tobe rigidly mounted to said bed, an upper shoe adapted to be rigidlymounted to said ram, and means for causing the two shoes to operate inalignment, a pair of templates detachably mounted, one under said uppershoe, the other upon said lower shoe, a plurality of punch and dieimplements each including a part adapted to act on the work and alaterally extending portion having a surface extending perpendicular tothe axis of said part, cooperating parts on said templates and on saidpunch and die implements for correctly positioning said implements onsaid templates, and means engaging said laterally extending portions forsecuring said implements to said templates, said punch and dieimplements having their perpendicular surfaces secured to the adjacentfaces of the upper and lower templates to position said punch implementsin axial alignment with said die implements..

13. A die assemblage for use in a press having a stationary bed andreciprocating ram, comprising a. die set having a lower shoe adapted tobe rigidly mounted to said bed, an upper shoe adapted to be rigidlymounted to said ram, and means for causing the two shoes to operate inalignment, a pair of templates detachably mounted, one under said uppershoe, the other upon said lower shoe, a plurality of punch and dieimplements each including a part adapted to act on the work and alaterally extending portion having a surface extending perpendicular tothe axis of said part, identically located parts on said templatesadapted to cooperate with corresponding parts on said punch and dieimplements to correctly locate said implements on said templates, andmeans on said implements independent of said corresponding parts thereoffor securing said implements on said templates after said implements arelocated on said templates.

14. A die assemblage for use in a press having a stationary bed andreciprocating ram, comprising a die set having a lower shoe adapted tobe rigidly mounted to said bed, an upper shoe adapted to be rigidlymounted to said ram, and means for causing the two shoes to operate inalignment, a pair of templates detachably mounted, one under said uppershoe, and the other upon said lower shoe, a plurality of punch and dieimplements each including a part adapted to act on the work and alaterally extending portion having a surface extending perpendicular tothe axis of said part, identically located parts on said templatesadapted to cooperate with corresponding parts on said punch and dieimplements to correctly locate said implements on said templates, meanson said implements independent of said corresponding parts thereof forsecuring said implements on said templates after said implements arelocated on said templates, and :means for "accurately locating saidtemplates in correct superimposed relation to each other on said shoesof said die set before mounting said templates thereon.

15. A die assemblage for use in a press having a stationary bed andreciprocating ram, comprising a die set having a lower shoe adapted tobe rigidly mounted to said bed, an upper shoe adapted to be rigidlymounted to said ram, and means for causing the two shoes to operate inalignment, a pair of templates detachably mounted, one under said uppershoe, the other upon said lower shoe, a plurality of punch and dieimplements each including a part adapted to :act on the work and alaterally extending portion having a surface extending perpendicular tothe axis of said part, identically located parts on said templatesadapted to cooperate with corresponding parts on said punch and dieimplements to correctly locate said implements on said templates, meanson said implements independent of said corresponding parts thereof forsecuring said implements on said templates after said implements arelocated on said templates, and means for adjusting said templatesrelatively to each other and to said shoes of said die set forpositioning said punch implements in correct axial alignment with saiddie set before mounting said templates on said shoes of said die set.

16. A die assemblage including a pair of templates for mounting on tworelatively movable members of a press, said pair of templates having aplurality of identically located positioning holes therein, a pluralityof sets of punch and die implements having parts cooperating with saidholes in said templates for accurately locating the punch implements onone template in correct positions relatively to the die implements onthe other template, said implements having laterally extending partswith flat faces perpendicular to their axes and adapted to be placed incontact with the adjacent flat faces of said templates to support saidimplements, after location of the same on said templates, with the punchand die axes in alignment, and means for securing said laterallyextending parts to said templates to releasably hold said implementsthereon.

17. A die assemblage including a pair of templates for mounting on tworelatively movable members of a press, said pair of templates having aplurality of identically located positioning holes therein, saidtemplates being made of flat plates of a thickness not materiallygreater than the diameters of said positioning holes therein, aplurality of sets of punch and die implements I having parts cooperatingwith said holes in said templates for accurately locating the punch, anddie implements on said templates, and means independent of said holesfor securing said punch and die implements to the adjacent faces of saidtemplates for supporting said implements thereon with the axis of eachimplement perpendicular to its template.

18. A die assemblage including a pair of templates for mounting on tworelatively movable members of a press, said pair of templates having aplurality of identically located positioning holes therein, a pluralityof sets of punch and die implements having parts cooperating with. saidholes in said templates for accurately locating the punch implements onone template in correct positions relatively to the die implements onthe other template, and means independent of and spaced eccentricallywith relation to said holes in said templates and of said parts on saidimplements for securing said implements to said templates with theiraxes perpendicular to the adjacent faces of said templates.

19. The combination of a punch implement having a punch and a sleevearranged about the work engaging end of the punch, and having acylindrical portion which is concentric with the axis of said punch, adie implement including a die adapted to cooperate with said punch, saiddie implement having a cylindrical surface concentric with the axis ofsaid die, and a locator sleeve having a cylindrical surface adapted tosimultaneously engage said cylindrical surfaces of said punch and dieJim-plements when said punch and said die are axially aligned.

20. The combination of a punch implement having a punch mounted thereinfor axial movement and having a stripper arranged about said punch andprovided with a cylindrical outer surface concentric with said punch, a,die implement including a die adapted to cooperate with said punch andhaving an outer cylindrical sur-' face concentric with the axis of saiddie, and a locator sleeve having an internal cylindrical surface'adaptedto fit snugly about said cylindrical outer surfaces of said stripper andsaid die to axially align said punch and said die.

21. The combination of a punch implement having a punch and acylindrical part arranged about the work engaging portion of said punchand concentric with the axis of said punch, a die implement including adie and having a cylindrical surface extending coaxially with said dieabout the work engaging portion thereof and of the same diameter as saidcylindrical part of said punch implement, and a locator sleeve having acylindrical surface adapted to snugly fit said cylindrical surfaces ofsaid punch and die implements for locating said implements with thepunch and die thereof in correct axial alignment.

22. A die set for use in a press and including a punch holder shoe and adie shoe on which a punch implement and a die implement respectively maybe mounted, and which are arranged one above the other, means for gagingsaid shoes for accurate movement toward and from each other,

supporting rails on the upper of said shoes for temporarily andadjustably supporting one of said implements thereon while correctlypositioning the same on said upper shoe, and means for rigidly securingsaid first mentioned implement to said upper shoe for supporting thesame independently of said supporting rails.

23. A die set for use in a press and including a punch holder shoe and adie shoe on which a punch implement and a die implement respectively maybe mounted, and which are arranged one above the other, means for gagingsaid shoes for accurate movement toward and from each other, supportingrails on the upper of said shoes for temporarily and adjustablysupporting one of said implements thereon while correctly positioningthe same on said upper shoe, means for rigidly securing said firstmentioned implement to said upper shoe for supporting the sameindependently of said supporting rails, and adjusting means on the lowershoe for engaging an implement placed thereon to move the samehorizontally on the lower shoe into correct operative relation to theimplement on the upper shoe.

24. A die set for use in a press and including a punch holder shoe and adie shoe on which a punch implement and a die implement respectively maybe mounted, means for guiding said shoes for accurate movement towardand from each other,- one of said shoes having T slots formed thereinadjacent to edges thereof, gages for positioning the work with referenceto said die set, and clamping means cooperating with said T slots andsaid gages for adjustably positioning said gages on said die set.

GEORGE E. WALES.

